Attachment for pile-fabric looms



Feb. 6, 1923.

M. R. BIRMINGHAM.

ATTACHMENT FOR PILE FABRIC LOOMS.

2 SHEET --SHEET1.

FILED OCT, 25,192]- Feb. 6, 1923.

M R BIRMINGHAM ATTACHMENT FOR PILE FABRIC LOOMS.

2 SHEET -SHEET2- FILED 0CT.25,1921.

Patented Feb. 6, 1923.

"l r 5? in "r" a tint l a i ATTACHMENT F03, FILE-FABRIC LOOIvIS.

Application filed october 25,

To all whom it may concern:

Be it known that. I, fVlICHAEL R. BULUTNG- HAM, a citizen of the United States. and a resident of Yonkers, county of lVestchester, and State of New York. have invented certain new and useful Improvements in Attachments for Pile-Fabric Looms, of which the following is a specification.

This invention relates to improvements in attachments for pile fabric looms and especially to a device for holding the free ends of the pile wires in position during the weaving operation before they are securely seized by the weave of the fabric.

The object of the invention is to provide a simple, inexpensive and effective device which may be applied to looms of this general character and which will render the operation of the loom more certain. More specifically its object is to provide a simple device for holding the pile wires in desired position and in proper spaced relation during the part of their cycle of operation in which their ends are usually left free and during which time they are liable to turn over or become bent or unevenly spaced. This and other objects of the invention will appear in the following specification in which I will describe the invention and the novel features of which I will set forth in the appended claims.

Referring to the drawings Fig. 1 is plan view of a portion of a pile fabric loom with a device attached thereto which embodies my invention.

Fig. 2 is a side elevation of. a preferred form of my new device with some pile wires thereon shown in section.

Fig. 3 is plan view of the device.

ig. 4; is a front elevation of the same hanisn.

5 is side elevation on an enlage.

scale of'a toothed wheel which forms a part of the device together with certain cooperat ing parts shown in outline for the purpose of illustrating the operation.

Like characters of reference designate corresponding parts in all the figures of the drawings.

10 designates a part of the frame of a loom in which a fabric 11 is being formed. 12 designates the longitudinal fibers of this 1921. Serial No. 510,284.

fabric and 13 a shuttle which czrries the t ansverse fiber. 14 is a pile wire, several of which are shown in position in Fig. 1. Each of these carries a knife or cutting edge near its free end. A reed 16 has upwardly projecting reed posts 17 which engage the pile wires and force them forwardly. This forward movement of the pile wires is also as sisted by an auxiliary bracket 18 that en-- gages the wires on the outer side of the clamp and prevents strain on the wires as they pass through the clamp. It is essential that this knife edge be held in correct cutting position so that when the pile wires are withdrawn the fibers will be severed properly to give the pile effect to the fabric.

For this purpose I provide a device for receiving and holding the pile wires near their free ends. This device, designated generally by the reference numeral 20, comprises a plate 21 which is secured to the frame of the loom as by a bolt at 22, an arm 23, the end of which adjacent the plate is slotted as at 24- and fitted to slide longitudinally under a lug 25 which is a part of the plate. 26 is a headed pivot secured to the plate and passing through the slot in arm 23. This provides a structure for adjusting the device to the loom whereby it may be held in operative position. Also by sliding arm 23 forwardly in the plate as far as the length of the slot will permit, the arm may be swung out of the way into the position in which it is indicated at 23 in Fig. 1.

The forward end of the arm 23 forms a track or platform 27 for receiving the pile wires. A projection 28 from one side of this platform affords a ready grip for swinging; the arm aside and projection 29 from the opposite side is provided to form a suport under th selvage for the pile wires to old the wires when the wires are first inserted after a heading has been formed. The term heading is used in the art by weavers to indicate that part of a carpet or rug formed at each end thereof and woven without pile and this portion of the carpet or rug is out upon the'completion of the article.

A bow spring 30 is affixed to the arm 23 at 31 and this extends forwardly over the platform 27. A head. 32 is secured to the forward end of this how spring as by being dove-tailed to fit the end of the spring as shown at and bolted to the spring at The head is constructed to form a down-- wardly curved cam surface 35 an op1 ositel v inclined surface 36 and a vertical shoulder 37.

In the head is rotatably supported a toothed wheel l0, the teeth of which are formed to cooperate with the surfaces of the platform, of the head and with the pile wires. This may be freely rotative or a ratchet spring ll may be provided to position the teeth of the wheel and to prevent the rotation of the wheel in one direction. The platform 27 is recessed or depressed at 4-2 to clear this wheel, thereby providing the plat form with a portion t5 disposed in. a plane above the recessed portion to assist in retaining one wire when the next succeeding wire is being received between the wheel teeth.

A rigid guide 50 is affixed to the arm 23 at 51 and this has an edge 52 parallel with the platform 27 and spaced therefrom a distance equal to the height of the pile wires.

The operation of this device will be de scribed, by reference to Figs. 2 and 5. The pile wires 14 are advanced one at a time by the loom reed assisted by bracket 19. from right to left. ll hen one of them reaches the position 1% on the platform 27 it comes in contact with the cam surface 35. its further movement to the left raises the head 32 against the pressure exerted by the how spring. As soon as the pile wire reaches a position under the surface of the head it rises on the incline t0 the higher portion d3 of the platform into the position in which it is shown at lat into the space between two of the teeth of the wheel all. The pile wire will he held securely in this position by the cooperatioi'i of the teeth of the wheel 40 and the vertical. shoulder 1?? of the head 32. The teeth are constructed. to form parallel sides which in this position stand vertically.

When the next pile wire is moved past position l l it will raise the head and the wheel l0 but the surf i of t d. guide 50 will hold the wire tion 1-! down on the platfor wire now embedded in the tabric is i by the action of the loom reed to the position i l". The shape of the wheelv teeth is such as to still hold this wire up and spaced an exact distance from the wire at 1.4;. The approach of the next pile wire will move one of the wires from 14" to where it is released. from the wheel. But at such a time it is firmly supported in proper position in the fabric itself and needs no other support.

When the ratchet spring ll is used it not nly positions the wheel but prevents its rotation in one direction This invention may be used with other structures than the specii'ic one shown as an illustration and l intend no limitations other than those in'iposed by the appended claims.

lVhat I claim is:

l. The combination with a pile Wire supporting platform, a head, a bow spring sup porting the head in, definite relation to the platform and permitting movement of the head from and toward the platform, said head having a shoulder arranged to engage a pile wire near the free end thereof and to coact with the platform to hold the wire in definite position and arranged to be raised by the advance of a pile wire to release the held wire.

2. The combination with a pile wiresupporting platform, a head, and a bow spring supporting the head in definite relation to the platform and permitting movement of the head from and toward the platform, said head having a shoulder arranged to en gage a pile wire near the free end thereof and to coact with the platform to hold the wire in a definite position, said head having oppositely inclined under surfaces arranged to be engaged by and to engage the pile wire.

The combination with a pile wire suppOl'i'llll' platform, a head, and a bow spring s-iuppoitirp the head in definite relation to the platforn'i and permitting movement of the head from and toward the platform, said head having ashoulder arranged to engage a pile wire near the free end thereof and to coact with the platform to hold the wire in definite position, said head having a can: surface arranged to be engaged by a pile wire attending downwardly and rear weirdly. terminating short of the shoulder, and an oppositely inclined surface joining the shoulder and the cam.

l. flhe combination with a pile wire support platform, a head, a bow spring suppor the head in definite relation to the platform and permitting movement of the head from and toward the plat form said head :31 iulder arranged to engage a pile llarip a the free end thereoi 1nd to coact a pile wire ill coac t with tile platform to hold the wire in a definite position, said head having a cam surface arrangec to be engaged by a pile wire extending downwardlv and rearwardly, terminating short of the shinilder, an oppositelr inclined surface joining the shonlder and the cam, and a fixed guide at one side of the head in spaced relation to the platform preventing underlying pile wires from rising as the head is lifted.

6. The combination with a pile wire supporting platform, a head, a resilient connection between the platform and head permi'i ing movement of the head away from and towarr the platform, said head having a shoulder a1 'anged to engage a pile wire near the free end thereof, a toothed wheel having spaces between its teeth for receiving the pile wire, and means for elevating the head and rota-ting the wheel torelease the held wire, comprising a pile wire movable between the platform and the head.

7. The combination with a pile wire supporting platform, a head, a resil ent connection between the platfrom and head per mit'ting movement of the head away from and toward the platform, said head having a shoulder arranged to engage a pile wire near the free end thereof, a toothed wheel having spaces between its teeth for receiving the pile wire, and means for elevating the head and rotating the wheel to release the held wire, comprising a pile wire movable between the platform and the head, the teeth of said wheel being arranged to space the released wire from the held wire.

8. The combination with a pile wire supporting platform, a head, a resilient connection between the platform and head, per mitting movement of the head away from and toward the platform, said head having a sl'ioulder arranged to engage a pile wire near the free end thereof. a toothed wheel. having spaces between its teeth for receiving the pile wire, means for elevating the head and rotating the wheel to release the held wire, comprising a pile wire movable between the platform and the head, the teeth of said wheel being arranged to space the rel wire from the held wire and a l ci g' nniflerlving pile wires from risk when the platform is elevated.

9. The combination with a pile wire supporting platform, a head, a resilient connection between the platform and head permitting l'llOYGlllOIlil of the head away from and toward the platform. said head having a shoulder arrai'iged to engage a pile wire near the free end thereof, a toothed wheel having spaces between its teeth for receiving the pile wire, a ratchet engaging said. wheel to prevent its rotation in one direction, and means for elevating the head and co p a pile the platiorm and the head, wheel being arranged to sp: c" the wire from the held wire.

it). The combi? nation with a pile wire sup- Porting platform, a head, a resilient con nection ween the platform and head permitting novement of the head away from and toward the platform, said head ha r ing a shoulder arranged to enpegc a pile wire near the free end thereo a toot ed wheel having spaces between its tee h for receiving the pile wire, said platform being depre sed to receive the lowermost part of the rheel, a spring engaging the teeth of released said wheel arrain d to position the wheel and to prevent its rotation in one direction,

form and the heath and a fixed guide in spaced relation to the platform preventL g underlying); pile wires from rising when the platform is elevated.

ll. The combination with a loom frame, a bracket affixed thereto, a pile wire supporting plfLlZfOll'lD swingnbl connected with the bracket, means for holding the platform against swinging, said platform having a lateral projection, 11 head, a bow spring snpportin the head in definite relation to the platform and permitting movement of the head from and toward the platform, said head havin; a shoulder arranged to engage a pile wi e near the free end thereof and to react with the platform to hold the wire in a definite position and arranged to be raised by the advance of pile wire to release the held wire.

12. The combination with a loom frame, a bracket a lined thereto, a pile wire supportinn platform swingablv coma-acted with the ljn'arl-tet. means for holding the platform against swinging, said platfm'in having a lateral projection, a head, a bow spring between the track and head permitting movement of the head away from and toward the platform said head having" a shoulder arranged to ciiegr a p le wire near the free endl'liei' lC-fl'l whee niri 'i' spaces from and toward the platform, and. a toothed wheel rotatively supported on the head arranged to engage a pile wire.

1 The combination with a loom frame, a bracket ai'lixed thereto, a pile wire support ing platform swingably connected with the bracket, said platform having a lateral projection, a head, a resilient support therefor permitting movement of the head away from and toward the platform, a toothed wheel rotatively supported on the head arranged to engage a pile wire. and a fixed guide at one side the head in, spaced relation to the platform preventing underlying pile Wires from rising as the head is lifted.

15. The combination with a loom frame, a bracket affixed thereto, a pile wire supporting platform carried by the bracket having a depressed portion and. an elevated portion, and a toothed Wheel movably supported above the platform and adapted to receive and position the pile wires.

16. T he combination with a loom frame, a bracket affixed thereto, a platform carried by the bracket having a depressed portion and an elevated portion, and a toothed wheel niovably supportedabove the platform and adapted to receive pile wires on the lower level of the platform and force them on the upper level whereby one pile is retained by the wheel as the next succeeding pile is moving toward the wheel.

17. The combination with a loom frame, a bracket affixed thereto, a pile wire support ing platform connected with the bracket and having a depressed and an elevated portion, a head, a resilient supporttherefor permitting movement of the head away from and toward the platform, and a toothed wheel rotatively supported on the head arranged to engage a pile wire, the elevated portion of the platform retaining one pile Wire in the wheel as the head is raised by the next succeeding pile wire.

In Witness whereof, I have hereunto set my hand this 14th day of October, 1921.

MICHAEL R. BIRMINGHAM. 

